How to realize numerical Sum in php

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To achieve numerical summation methods: 1, when there are only two values, directly use the "numerical value 1 + numerical value 2" statement to sum; 2, when there are multiple values, you can use the "array (value 1, value 2, value 3... value n)" statement to store the value in the array, and use the "array_sum ($arr)" statement to calculate the sum of all elements in the array.

Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

The method of realizing numerical Sum in php

When there are only two numeric values, the numerical sum is simple, and you can add the two numbers directly using the "+" operator:

If it is multiple numeric values, it is OK to use the "+" operator to add numbers, but it is troublesome.

At this point, we can use the array

Store values in an array

Using the array function array_sum () to calculate the sum of all elements in the array

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